For buying and selling used phones, we’ve always preferred Swappa. It specializes in selling phones that have been approved by staff to make sure that you get a reliable phone, not a piece of junk. Now, this site is changing its fee structure.

Until recently, Amazon’s review system allowed for a deceptively biased loophole: users could receive free products from companies in exchange for an “honest” review. These were still pretty biased, so Amazon’s getting rid of them.

Android/iOS: You’ve probably already seen people you know selling stuff online through Facebook. Now, the company has decided to get in on the action with the new Marketplace that makes it easier to buy and sell with people near you.

We’ve known for a while that using a credit card or PayPal is the safest way to pay for things online. Now, it’s getting a little safer. If you live in the U.S., PayPal will now extend its consumer protection to digital purchases like apps, services, and event tickets.

Buying a used smartphone can save you some money, but it obviously involves a few risks—like making sure it's in good condition (and that it isn't stolen). Here are some tips I've learned after buying many used phones.

Amazon Prime has been a long-beloved subscription for its customers. Today, Newegg announced a similar service that allows frequent customers to pay $50 per year for free expedited shipping, waived restocking fees, and free return shipping.

Dear Lifehacker,I'm in the market for a new smartphone and would like to get one cheap. I'm worried about buying it from eBay or Craigslist for fear I'll get a stolen phone. Is there a way I can check before I buy?

OS X/iOS: This time of year, when you probably have to order a lot of gifts, it helps to keep track of them in one place. Parcel, a free app for Apple operating systems, can help you do that with a nice and simple interface.

There's no shortage of package tracking applications for Android, but we think that Slice offers the best combination of tracking features and other useful tools to manage your purchases and keep track of your online orders. Plus, it's completely free.

Amazon often earns its reputation as the world's largest online retailer due to the fact that they offer tons of awesome discounts and services that most of us don't know about until they've been around for years. The latest? Their virtual outlet store.

Shipping costs run high when you need something in a day or two, but occasionally ground will get there just as fast without the added cost. Ricky Van Veen, co-founder of CollegeHumor, discovered that shipping delivery time maps can clue you in to this cost-saving trick:

Clipping coupons can save a lot of money, but it can also waste a lot of time. You don't have to join the ranks of extreme couponers to ensure you get a great deal. With a few tips and tools, you can automate those discounts and save yourself money without any of the work.

Buying second-hand gift cards can save you a bit of money, but buying them on eBay (or potentially anywhere else) may cause problems. As one unlucky buyer told the Consumerist, sometimes they expire before you even have the chance to use them:

When buying on eBay (and elsewhere, presumably), PayPal likes to charge you quite a bit to convert between to kinds of currency. While this convenience rarely comes free, it may be cheaper through your bank. As redditor ilki points out, you can just route the conversion through your bank instead and likely save some…

It's easy to find popular products, but sometimes you want something different than the mainstream option. Finding a good alternative isn't always easy, but Redditor wellnhoferia found a simple trick for discovering popular alternative products: Google autocomplete.

Amazon is a big company with more pages than you can probably hope to visit, so it's not surprising that a lot of its cool features go easily unnoticed. Here's a look at five features you probably haven't heard of that can save you time, money, or both.

There are plenty of package trackers to choose from on the iPhone, some of which are very good, but nothing really comes close to the ease of Slice. It wins our pick for best-in-class package tracker because you never have to enter you tracking numbers into the app. It pulls them from your email inbox automatically…

PayPal's Android app just received an update adding some significant new features. Most notable is the support for near-field communication (NFC) payments. Additionally, the PayPal app is now designed to function natively on more tablet devices and the user interface received an update on the whole. The usual small…